org.apache.hadoop.yarn.webapp.hamlet
Class HamletImpl

java.lang.Object
  org.apache.hadoop.yarn.webapp.hamlet.HamletSpec
      org.apache.hadoop.yarn.webapp.hamlet.HamletImpl

Direct Known Subclasses:

Hamlet

@InterfaceAudience.Private
public class HamletImpl
extends HamletSpec

A simple unbuffered generic hamlet implementation. Zero copy but allocation on every element, which could be optimized to use a thread-local element pool. Prints HTML as it builds. So the order is important.

Nested Class Summary

class	HamletImpl.EImp<T extends HamletSpec._> The base class for elements
static class	HamletImpl.EOpt Element options.
class	HamletImpl.Generic<T extends HamletSpec._>

Nested classes/interfaces inherited from class org.apache.hadoop.yarn.webapp.hamlet.HamletSpec

HamletSpec._, HamletSpec._Anchor, HamletSpec._Block, HamletSpec._Body, HamletSpec._Cell, HamletSpec._Child, HamletSpec._Content, HamletSpec._Dl, HamletSpec._FieldSet, HamletSpec._FontSize, HamletSpec._FontStyle, HamletSpec._Form, HamletSpec._FormCtrl, HamletSpec._Head, HamletSpec._Html, HamletSpec._ImgObject, HamletSpec._InsDel, HamletSpec._Label, HamletSpec._Legend, HamletSpec._Li, HamletSpec._Object, HamletSpec._Option, HamletSpec._Param, HamletSpec._RawContent, HamletSpec._Script, HamletSpec._Special, HamletSpec._SubSup, HamletSpec._Table, HamletSpec._TableCol, HamletSpec._TableRow, HamletSpec._Tr, HamletSpec.A, HamletSpec.ABBR, HamletSpec.ACRONYM, HamletSpec.ADDRESS, HamletSpec.AREA, HamletSpec.Attrs, HamletSpec.B, HamletSpec.BASE, HamletSpec.BDO, HamletSpec.Block, HamletSpec.BLOCKQUOTE, HamletSpec.BODY, HamletSpec.BR, HamletSpec.BUTTON, HamletSpec.ButtonType, HamletSpec.CAPTION, HamletSpec.CITE, HamletSpec.CODE, HamletSpec.COL, HamletSpec.COLGROUP, HamletSpec.CoreAttrs, HamletSpec.DD, HamletSpec.DEL, HamletSpec.DFN, HamletSpec.Dir, HamletSpec.DIV, HamletSpec.DL, HamletSpec.DT, HamletSpec.Element, HamletSpec.EM, HamletSpec.EventsAttrs, HamletSpec.FIELDSET, HamletSpec.Flow, HamletSpec.FontStyle, HamletSpec.FORM, HamletSpec.FormCtrl, HamletSpec.H1, HamletSpec.H2, HamletSpec.H3, HamletSpec.H4, HamletSpec.H5, HamletSpec.H6, HamletSpec.HEAD, HamletSpec.Heading, HamletSpec.HeadMisc, HamletSpec.HR, HamletSpec.HTML, HamletSpec.I, HamletSpec.I18nAttrs, HamletSpec.IMG, HamletSpec.Inline, HamletSpec.INPUT, HamletSpec.InputType, HamletSpec.INS, HamletSpec.KBD, HamletSpec.LABEL, HamletSpec.LEGEND, HamletSpec.LI, HamletSpec.LINK, HamletSpec.LinkType, HamletSpec.Listing, HamletSpec.MAP, HamletSpec.Media, HamletSpec.META, HamletSpec.Method, HamletSpec.OBJECT, HamletSpec.OL, HamletSpec.OPTGROUP, HamletSpec.OPTION, HamletSpec.P, HamletSpec.PARAM, HamletSpec.PCData, HamletSpec.Phrase, HamletSpec.PRE, HamletSpec.Preformatted, HamletSpec.Q, HamletSpec.SAMP, HamletSpec.Scope, HamletSpec.SCRIPT, HamletSpec.SELECT, HamletSpec.Shape, HamletSpec.SMALL, HamletSpec.SPAN, HamletSpec.Special, HamletSpec.STRONG, HamletSpec.STYLE, HamletSpec.SUB, HamletSpec.SUP, HamletSpec.TABLE, HamletSpec.TBODY, HamletSpec.TD, HamletSpec.TEXTAREA, HamletSpec.TFOOT, HamletSpec.TH, HamletSpec.THEAD, HamletSpec.TITLE, HamletSpec.TR, HamletSpec.UL, HamletSpec.VAR

Constructor Summary

HamletImpl(PrintWriter out, int nestLevel, boolean wasInline)

Method Summary

PrintWriter	getWriter()
protected void	indent(EnumSet<HamletImpl.EOpt> opts)
int	nestLevel()
static String[]	parseSelector(String selector) Parse selector into id and classes
protected void	printAttr(String name, String value)
protected void	printEndTag(String name, EnumSet<HamletImpl.EOpt> opts)
protected void	printStartTag(String name, EnumSet<HamletImpl.EOpt> opts)
<T extends HamletSpec._> HamletImpl.Generic<T>	root(String name)
<T extends HamletSpec._> HamletImpl.Generic<T>	root(String name, EnumSet<HamletImpl.EOpt> opts) Create a root-level generic element.
static <E extends HamletSpec.LINK> E	setLinkHref(E e, String href)
static <E extends HamletSpec.SCRIPT> E	setScriptSrc(E e, String src)
static <E extends HamletSpec.CoreAttrs> E	setSelector(E e, String selector) Set id and/or class attributes for an element.
void	setWasInline(boolean state)
protected void	subView(Class<? extends SubView> cls) Sub-classes should override this to do something interesting.
boolean	wasInline()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HamletImpl

public HamletImpl(PrintWriter out,
                  int nestLevel,
                  boolean wasInline)

Method Detail

nestLevel

public int nestLevel()

wasInline

public boolean wasInline()

setWasInline

public void setWasInline(boolean state)

getWriter

public PrintWriter getWriter()

root

public <T extends HamletSpec._> HamletImpl.Generic<T> root(String name,
                                                           EnumSet<HamletImpl.EOpt> opts)

Create a root-level generic element. Mostly for testing purpose.

Type Parameters:

T - type of the parent element

Parameters:

name - of the element

opts - element options

Returns:

the element

root

public <T extends HamletSpec._> HamletImpl.Generic<T> root(String name)

printStartTag

protected void printStartTag(String name,
                             EnumSet<HamletImpl.EOpt> opts)

indent

protected void indent(EnumSet<HamletImpl.EOpt> opts)

printEndTag

protected void printEndTag(String name,
                           EnumSet<HamletImpl.EOpt> opts)

printAttr

protected void printAttr(String name,
                         String value)

subView

protected void subView(Class<? extends SubView> cls)

Sub-classes should override this to do something interesting.

Parameters:

cls - the sub-view class

parseSelector

public static String[] parseSelector(String selector)

Parse selector into id and classes

Parameters:

selector - in the form of (#id)?(.class)*

Returns:

an two element array [id, "space-separated classes"]. Either element could be null.

Throws:

WebAppException - when both are null or syntax error.

setSelector

public static <E extends HamletSpec.CoreAttrs> E setSelector(E e,
                                                             String selector)

Set id and/or class attributes for an element.

Type Parameters:

E - type of the element

Parameters:

e - the element

selector - Haml form of "(#id)?(.class)*"

Returns:

the element

setLinkHref

public static <E extends HamletSpec.LINK> E setLinkHref(E e,
                                                        String href)

setScriptSrc

public static <E extends HamletSpec.SCRIPT> E setScriptSrc(E e,
                                                           String src)